#include <iostream>
using namespace std;

void cInc(char& c) 
{
  c += 1;
  int i = 0;
  while (i < 100)
    i++;
  i *= 2;
}

int main()
{
  char c = 'a';
  while (c != 'f') 
  {
    cInc(c); 
  }
  cout << c << endl;
  char b = c - 4;
  return 0;
}
